The first U.S. patent issued for a pneumatic automobile tire that could readily and easily be detached or mounted to the rim of a wheel. The inventors were Alexander T. Brown and George Stillman of Syracuse, New York (No. 488494). They claimed as their improvement a wheel with an exterior grooved rim with flanges to retain a tire with an inflatable tube. Peripheral metal bands embedded in the tire are designed to form a bead that will be forced by air pressure upon inflation to be seated and retained in the grooved rim. Thus no permanent connection between the tire and the wheel is necessary, and no tools for tightening are required, other than those used for inflation.
NIGERIA LAGOS WORST CITY IN THE WORLD
December 20, 1990 - Lagos, Nigeria
The Population Crisis Committee said that Lagos, Nigeria is the worst city in the world to live in, whereas the best cities to live in are Montreal, Melbourne, and Seattle-Tacoma. The best cities scored 100, but Lagos scored only 19. Half of Lago's homes are without water and electricity and only one person in 100 has a telephone. This city has a density of 5.8 persons per dwelling.
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RANDOM QUOTES
Until a man duplicates a blade of grass
by Earth Day, Thomas Alva Edison Inventor
"...Until a man duplicates a blade of grass, Nature can laugh at his so-called scientific knowledge. Remedies from chemicals will never stand in favorable comparison with the products of Nature, the living cell of a plant, the final result of the rays of the sun, the mother of all life...."
The wealth of the nation
by Earth Day, Gaylord Nelson
"...The wealth of the nation is its air, water, soil, forests, minerals, rivers, lakes, oceans, scenic beauty, wildlife habitats and biodiversity that'as all there is. That'as the whole economy. That'as where all the economic activity and jobs come from. These biological systems are the sustaining wealth of the world...."
RANDOM FACTS
Salary
about Steve Jobs
Steve Jobs' annual salary was $1, just enough to keep company health benefits.
Harvard Medical School
about Eyesight Myth and Fact
Myth: Staring at a computer screen all day is harmful to the eyes.
Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable.
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